diff --git a/.tool-versions b/.tool-versions
index 2de72743..03ae12d8 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,3 +1,3 @@
-erlang 27.2.2
+erlang 27.3.4
 elixir 1.18.2
 nodejs 22.13.1